Detection of wavelengths in the visible range using fiber optic sensors

Leonardo Díaz; Yailteh Morales; Lorenzo Mattos; Cesar O. Torres

doi:10.1117/12.2025500

18 November 2013 Detection of wavelengths in the visible range using fiber optic sensors

Leonardo Díaz, Yailteh Morales, Lorenzo Mattos, Cesar O. Torres

Proceedings Volume 8785, 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications; 87852L (2013) https://doi.org/10.1117/12.2025500
Event: 8th Ibero American Optics Meeting/11th Latin American Meeting on Optics, Lasers, and Applications, 2013, Porto, Portugal

Abstract

This paper shows the design and implementation of a fiber optic sensor for detecting and identifying wavelengths in the visible range. The system consists of a diffuse optical fiber, a conventional laser diode 650nm, 2.5mW of power, an ambient light sensor LX1972, a PIC 18F2550 and LCD screen for viewing. The principle used in the detection of the lambda is based on specular reflection and absorption. The optoelectronic device designed and built used the absorption and reflection properties of the material under study, having as active optical medium a bifurcated optical fiber, which is optically coupled to an ambient light sensor, which makes the conversion of light signals to electricas, procedure performed by a microcontroller, which acquires and processes the signal. To verify correct operation of the assembly were utilized the color cards of sewing thread and nail polish as samples for analysis. This optoelectronic device can be used in many applications such as quality control of industrial processes, classification of corks or bottle caps, color quality of textiles, sugar solutions, polymers and food among others.

Citation Download Citation

Leonardo Díaz, Yailteh Morales, Lorenzo Mattos, and Cesar O. Torres "Detection of wavelengths in the visible range using fiber optic sensors ", Proc. SPIE 8785, 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications, 87852L (18 November 2013); https://doi.org/10.1117/12.2025500

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